package com.liesp.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class PageEncodingFilter implements Filter{
	private String encode;
	@Override
	public void destroy() {
		this.encode=null;
		
	}

	@Override
	public void doFilter(ServletRequest arg0, ServletResponse arg1,
			FilterChain arg2) throws IOException, ServletException {
			  
	   HttpServletRequest request = (HttpServletRequest)arg0;//强转HttpServletRequest
	   request.setCharacterEncoding(encode);//参数encode即为 String，切勿再加"双引号"
	   arg2.doFilter(arg0, arg1);
		
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
		  this.encode=arg0.getInitParameter("encoding");
		
	}
	
}
